Xiao D. He, Patrick O. Heynen, Richard L. Phillips, Kenneth E. Torrance, David Salesin, Donald P. Greenberg. A fast and accurate light reflection model. In James J. Thomas, editor, Proceedings of the 19st Annual Conference on Computer Graphics and Interactive Techniques, SIGGRAPH 1992. pages 253-254, ACM, 1992. [doi]
Abstract is missing.